Surat Al-Mā'idah Ayat 54

Sahih International:

O you who have believed, whoever of you should revert from his religion - Allah will bring forth [in place of them] a people He will love and who will love Him [who are] humble toward the believers, powerful against the disbelievers; they strive in the cause of Allah and do not fear the blame of a critic. That is the favor of Allah ; He bestows it upon whom He wills. And Allah is all-Encompassing and Knowing.